Chad disposal means



A ril 25, 1967 c. H. CLARK ETAL CHAD DISPOSAL MEANS Original Filed Dec.6, 1961 n k0 5 5 0 sw m y R .d n; OH rs THA I00 N P Mt YH W I C u f I Yw B ll llllflan United States Patent 5 Claims. (Cl. 178-17) Thisapplication is a division of co-pending application Ser. No. 367,410,filed May 14, 1964, now Patent No. 3,274,338, which is a division ofapplication Ser. No. 157,540, filed Dec. 6, 1961, now Patent No.3,205,305. The invention pertains to an improvement in the means forcarrying chad away from the perforating station of punched record codedrecording means.

In punched card and tape perforators the chad or material which ispunched from the records to make the coded perforations is normallydirected away from the perforating station by means of a duct which hasa chad receiving hood at the exit of the dies. When the chad is punchedfrom the record it is pushed up into the hood over the die and flowsthrough the disposal duct to a container located away from themechanism, but in some instances the duct becomes clogged and that isparticularly true in high speed perforators. The purpose of thisinvention is to overcome the disadvantages of blocking of the chad duct.

Accordingly a primary object of the present invention resides in theprovision in a perforator of a chad exit cover and deflecting ordisposal duct provided on its inner surface with a dry lubricant toobtain non-clogging smooth outflow of chad from the dies at ultra-highspeeds of operation. In conjunction herewith it is a further object toprovide a coating of molybdenum disulfide as the dry lubricant.

Further novel features and other objects of this invention will becomeapparent from the following detailed description, discussion and theappended claims taken in conjunction with the accompanying drawingsshowing a preferred structure and embodiment, in which:

FIGURE 1 is a perspective detail view showing the compact arrangement ofmultiple punches and operating components of a perforator machineutilizing the chad disposal means of the present invention; and

FIGURE 2 is a partially sectioned elevation view of a portion of thepunches of the mechanism of FIGURE 1 and illustrates the chad pick-uphead in section at the die exit.

The details of the perforating machine punch and selecting unit 500shown in FIGURE 1 are fully disclosed and described in both of theaforenoted applications and will not be described in detail herein.

The record medium to be perforated can be any thin sheet medium such ascard, fanfold stock or tape 510 as illustrated.

In the exemplary perforator a group of punches 598, nine including thefeed hole punch are reciprocally mounted in alignment in a punch guide592 rigidly secured to the machine frame. Above the punch guide is thetape guide and die assembly 594, the lower guide plate 596 of which iscoplanar with the flat table top of machine 500 forming the recordmedium track, and the chad removal tube 522 abuts over the chad exitportion of upper die plate 597 forming the chad exit head or hood 524.

Primary feed and back spacing of the record medium, whether it be tape,cards or fanfold, is accomplished by means of an indexed rotatablesprocket feed roller 650 located below the record media track andpositioned just after the punching station. A preliminary indexed feedwheel 651 is also used in the card and fanfold modes of operation. Aplurality of feed pins 652, secured in the periphery of feed roller 650engage properly spaced feed holes in the record medium so that steppedrotation of roller 650 causes a stepped feed movement of the recordmedium.

During operation of the machine a chad box (not shown) inside the mainmachine housing will, in time, become filled and when this occurs, asignal of some kind will be given to the operator. The chad box ofcourse should then be emptied.

A dry form of lubricant, specifically molybdenum disulfide 600, appliedby spraying or dipping, on the interior of the inlet of chad tube 522above die plate 597 will assure freedom of passage of the chad throughthe tube. This dry lubricant prevents blocking of the chad tube whichresults in malfunctions of the equipment when the chad is generated atultra-high speeds.

The invention may be embodied in other specific forms without departingfrom the spirit or essential characteristics thereof. The presentembodiment is therefore to be considered in all respects as illustrativeand not restrictive, the scope of the invention being indicated by theappended claims rather than by the foregoing description, and allchanges which come within the meaning and range of equivalency of theclaims are therefore intended to be embraced therein.

What is claimed and desired Patent is:

1. In combination: a recording device having recording mechanismcomprising a plurality of code punch and die sets, and means to collectand direct chad from said punch and die sets away from said recordingmechanism comprising a die exit hood, at least the interior surface ofwhich is a dry lubricant.

2. In a recording device as defined in claim 1, said dry lubricantincluding molybdenum disulfide.

3. In combination: a punch and die device for perforating a recordmedium, said device including movable punch means and associated diemeans having a die exit through which chad is discharged, chad disposalmeans for conducting chad away from said die exit, said chad disposalmeans including a hood having an inlet communicating with and envelopingsaid die exit, and a coating of dry lubricant on the interior of saidhood at least adjacent its inlet.

4. The combination as defined in claim 3, wherein said dry lubricantincludes molybdenum disulfide.

5. The combination as defined in claim 3, wherein said hood inlet is thesole inlet to said hood and said punch means constitutes the sole meansfor urging chad through said hood.

to be secured by Letters References Cited by the Examiner UNITED STATESPATENTS 7/1962 Gabriel 83100 9/1963 Kirkowski 83-468

1. IN COMBINATION: A RECORDING DEVICE HAVING RECORDING MECHANISMCOMPRISING A PLURALITY OF CODE PUNCH AND DIE SETS, AND MEANS TO COLLECTAND DIRECT CHAD FROM SAID PUNCH AND DIE SETS AWAY FROM SAID RECORDINGMECHANISM COMPRISING A DIE EXIT HOOD, AT LEAST THE INTERIOR SURFACE OFWHICH IS A DRY LUBRICANT.